Air purifier



FIG. 1 is a front elevational view of an air purifier;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a front/right/top perspective view thereof.

The portions of the drawings shown in broken lines form no part of the claimed design.

The portions of the Figures shown in broken lines are for illustrative purpose only and form no part of the claimed design. Applicant reserves the right to change to broken lines (environment or bounds of the invention) any solid lines herein. Applicant reserves the right to change to solid lines any of the broken lines (environment or bounds of the invention) shown herein. 

CLAIM We claim the ornamental design for an air purifier, as shown and described. 